Database Systems Overview

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What is the purpose of data processing?

To manage information strategically
To collect and manipulate data to produce information (correct)
To improve business processes
To generate knowledge

In an Information System, what is the role of interconnected components?

Generate information by working together (correct)
Produce knowledge independently
Store only digital documents
Isolate data sources

What is the main function of an API in the context of information management?

Provide access to data from third-party apps (correct)
Process data into knowledge
Generate internal data
Manage external data sources

Which of the following is classified as external data?

Multimedia Data (C) Signup and view all the answers

What is the relationship between effective decisions and meaningful results?

Effective decisions lead to appropriate actions (D) Signup and view all the answers

How does information management support organizations according to the text?

By improving business processes through knowledge (D) Signup and view all the answers

What is the primary key's main characteristic in a relational database schema?

Identifies each row uniquely (D) Signup and view all the answers

Which type of key is a candidate key that is not chosen to be the primary key?

Alternate Key (C) Signup and view all the answers

What is the significance of ensuring columns are insensitive to order in a relation?

It allows rows and columns to be ordered in any way (C) Signup and view all the answers

What is the purpose of using integrity constraints in database design?

To ensure data correctness and consistency (A) Signup and view all the answers

In a relational database, what does a foreign key reference?

Primary Key of another table (B) Signup and view all the answers

What is the purpose of Application-Based Constraints in database management?

Dependent on specific application requirements (B) Signup and view all the answers

What happens during 'Cascade' action related to referential integrity in a relational schema?

'Cascade' allows deletion/update on parent table reflected in child table (B) Signup and view all the answers

What is the primary role of a Composite Candidate Key in a relational schema?

Combines multiple columns to create a unique identifier (B) Signup and view all the answers

'Nullify' action in referential integrity management does what to foreign key values?

'Nullify' sets foreign key values to null (D) Signup and view all the answers

'Restrict' action on foreign keys ensures what during delete and update operations?

'Restrict' stops any delete or update operation on parent tables (C) Signup and view all the answers

What type of language is used to define the structure and layout of a database?

Data Definition Language (DDL) (B) Signup and view all the answers

Who is responsible for controlling access, backup, and recovery in a database system?

Database Administrators (DBAs) (B) Signup and view all the answers

Which utility/tool in DBMS is used for exporting and importing data?

Backup and Recovery (B) Signup and view all the answers

What does Database Schema describe?

The description of the database with respect to data structures, integrity constraints, and operations (A) Signup and view all the answers

What does Database Instance represent?

A specific moment in time in the database lifecycle (D) Signup and view all the answers

Which role focuses on designing the layout and structure of a database?

Database and Interface Designers (D) Signup and view all the answers

Which utility/tool in DBMS is used for monitoring the performance of a database system?

Report Generation (B) Signup and view all the answers

What does a Database Administrator (DBA) primarily focus on?

Controlling access and security of databases (A) Signup and view all the answers